I've been seeing a girl for four months, but before that we were seeing each other in the final stages of her last relationship. It's going v well, but (I think) because her last r'ship was so long and kinda tough, the rule is she gets as much space as she wants.

That's fine, but there are a couple of problems:
1 I feel like I'm playing second fiddle to everyone
2 Some of that time she needs is spent going for drinks (just drinks, I'm pretty sure) with guys she knows would like to further things, because (a) she does like to flirt and (b) I think she feels the need to feel totally free, even if she does still want me.

I'm pretty insecure but trying v hard to get over that, I just don't know if mentally I can handle it or for how long, because every few weeks I panic that we rushed into things too soon after the last relationship, and that we'll end up the same as she did with her last boyfriend. Any ideas?